/*
 * Copyright (c) 2012, Metron, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Metron, Inc. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL METRON, INC. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.metsci.glimpse.util.math;

/**
 * @author hogye
 */
public class MathConstants
{
    /**
     * The constant 2.0 * Math.PI.
     */
    public static final double TWO_PI = 2.0 * Math.PI;

    /**
     * The constant 0.5 * Math.PI.
     */
    public static final double HALF_PI = 0.5 * Math.PI;

    /**
     * The constant 0.5 * Math.PI; same as HALF_PI.
     */
    public static final double PI_OVER_TWO = HALF_PI;

    /**
     * The constant Math.sqrt(2.0 * Math.PI).
     */
    public static final double ROOT_TWO_PI = Math.sqrt( 2.0 * Math.PI );

    /**
     * The constant 1.0 / Math.sqrt(2.0 * Math.PI).
     */
    public static final double ONE_OVER_ROOT_TWO_PI = 1.0 / ROOT_TWO_PI;

    /**
     * The constant Math.sqrt(2.0).
     */
    public static final double ROOT_TWO = Math.sqrt( 2.0 );

    /**
     * The constant 1.0 / Math.sqrt(2.0).
     */
    public static final double ONE_OVER_ROOT_TWO = 1.0 / Math.sqrt( 2.0 );

    /**
     * The constant Math.log(2.0 * Math.PI).
     */
    public static final double LN_TWO_PI = Math.log( TWO_PI );

    /**
     * The constant Math.log(10.0).
     */
    public static final double LN_TEN = Math.log( 10.0 );

    /**
     * The constant Math.PI / Math.sqrt(2.0);
     */
    public static final double PI_OVER_ROOT_TWO = Math.PI / Math.sqrt( 2.0 );
}
